﻿@model IEnumerable<SimpleTaskManager.Domain.Entities.User>
@using SimpleTaskManager.Domain.Entities;

@{
    Layout = null;
    var positions = new List<String>();
    var values = new List<int>();
    foreach(User user in Model) 
    {
        if(user.Status == StatusEnum.Hired) {
            if(positions.Contains(user.Position)) {
                values[positions.IndexOf(user.Position)] += 1;
            } else {
                positions.Add(user.Position);
                values.Add(1);
            }
        }
    }
    
}

    <script type="text/javascript" src="https://www.google.com/jsapi"></script>
    <script type="text/javascript">

        // Load the Visualization API and the piechart package.
        google.load('visualization', '1.0', { 'packages': ['corechart'] });

        // Set a callback to run when the Google Visualization API is loaded.
        google.setOnLoadCallback(drawChart);


        // Callback that creates and populates a data table, 
        // instantiates the pie chart, passes in the data and
        // draws it.
        
       function drawChart() {

        // Create the data table.
        var data = new google.visualization.DataTable();
       data.addColumn('string', 'Position');
        data.addColumn('number', 'Number of people');

        data.addRows([
            @for(int i=0; i < positions.Count ; i++) {
                @:['@positions[i]', parseInt(@values[i])],
            }
        ]);

        // Set chart options
        var options = {'title':'Number of employees on different positions',
                       'width':650,
                       'height':500};

        // Instantiate and draw our chart, passing in some options.
        var chart = new google.visualization.PieChart(document.getElementById('positionChart_div'));
        chart.draw(data, options);
      }

    </script>


<div id="positionChart_div" style="width:650; height:500"></div>